And where is the problem? ...
In stammkennzeichen.de is Mtt. Augsburg cited as "owner" and not as "producer" of the "DN + KJ". There were other Erla-machines too used by Mtt. as test a/c (V-54, V-55).
And where is the problem with the W.Nr.15208 (an G-4 trop. without an "?"). I checked the other thread again but i didn't understand the problem ...